Model

   data
1 7 4 5
2 0 6 6
9 3 5 8

   +/R 1 +data
17 14 25

   (m l r)←⌽3⍴⌽1
   m
1
   l
1
   r
1

   m cells data
 1 7 4 5  2 0 6 6  9 3 5 8

   disp m cells data
┌→──────┬───────┬───────┐
│1 7 4 5│2 0 6 6│9 3 5 8│
└~─────→┴~─────→┴~─────→┘

   m effrank data
1

   +/¨ m cells data
17 14 25

   assemble +/¨ m cells data
17 14 25